Flomesh Service Mesh vs Greymatter

Flomesh Service Mesh (FSM) provides traffic management and service governance for microservices running on Kubernetes. It uses the Flomesh Pipy proxy, which is automatically added as a sidecar to onboarded applications. FSM supports traffic shifting, ingress and egress, and Kubernetes Gateway API capabilities, along with HTTP, TCP, gRPC and MQTT traffic. For service security, it enables mutual TLS and fine-grained access policies. Certificate management can use Tresor, cert-manager or HashiCorp Vault. Documentation marks Prometheus and Grafana integrations as stable and Jaeger distributed tracing as beta; integration guides also cover Dapr and discovery registries such as Consul, Eureka and Nacos. FSM supports x86 and ARM architectures and multi-cluster Kubernetes connectivity through the MCS API, though multicluster is marked alpha. It is open source, free and self-hosted, with Kubernetes and OpenShift listed. Installation requires Kubernetes 1.19 or later; version 1.1 is listed for Kubernetes 1.19 through 1.24.

Greymatter is a Zero Trust Networking platform for controlling, connecting, and securing applications, APIs, and AI workloads. Its architecture has analytics, zero trust, service connectivity, orchestration, and enterprise-integration layers. Deployments can run across AWS, Azure, GCP, Oracle Cloud, sovereign clouds, Kubernetes distributions, virtual machines, edge environments, and disconnected settings. Greymatter automates workload identity provisioning, applies mutual TLS, and uses NIST-validated FIPS 140-3 cryptography, CMVP #5191. GitOps Playbooks manage traffic policies across clusters with autonomous updates and zero-downtime changes. Deployment options include canary, blue-green, and progressive delivery with health checks, fallback logic, and rollback. Analytics integrates with Grafana, Kibana, Prometheus, Splunk, Elasticsearch, SIEMs, and APMs. Identity integrations support OAuth2, OIDC, and PKI, including Keycloak, Ping Federate, Okta, and Auth0. It offers hybrid deployment, enterprise support, and a 30-day free trial.